NnThe a/c won't blow cold air. Mechanic says the clutch is stuck in air compressor. How do I replace that?

By the compressor clutch I assume you mean the a/c clutch if so read on:


The air-conditioning system in your Ford is basically a circulation loop through which refrigerant is pumped by a compressor. The refrigerant is a combination of gas and liquid that becomes very cold as it is compressed and then expanded. The chilled gas then flows from the compressor into an evaporator coil. The cold refrigerant now inside the coil has air blowing across the fins and tubes of the coil, thereby cooling the air, which is transferred into the car. By following the procedures below, you can remove and replace the A/C compressor clutch in your Ford vehicle at minimal cost.

Instructions

1. • 1

     Have the air-conditioning system discharged or evacuated of refrigerant by certified personnel at a dealer service department or automotive air-conditioning repair facility.
     

   • 2

     Raise the hood and disconnect the negative battery cable terminal from the battery using a box-end wrench.
     

   • 3

     Disconnect the electrical plug-in connector from the compressor clutch by hand.
     

   • 4

     Remove the drive serpentine belt from the compressor clutch pulley by taking the tension from the pulley using a breaker bar and compressing the torsion spring tensioner.
     

   • 5

     Disconnect the refrigerant lines from the compressor with the box-end wrenches. Plug the open fittings to prevent the accidental entry of dirt and moisture; quarter-inch rubber stoppers are a good fit for these connections.
     

   • 6

     Loosen the mounting bolts with the box-end wrenches, and remove the bolts from the compressor clutch mounting bracket and lift the clutch out of the vehicle.
     

   • 7

     Pour out the refrigerant oil into a graduated container so you know how much new oil to add to the new compressor.
     

   • 8

     Installation is in the reverse order of removal. Always replace all O-rings with new ones that are specifically made for use with the new R-134a refrigerant. Lubricate the new O-rings with R-134a-compatible refrigerant oil.
     

   • 9

     Evacuate and recharge the system with the proper amount of R-134a refrigerant by the same certified mechanic that discharged the unit before you replaced clutch. Have the mechanic start the engine and let it run for a few minutes; this will let the system stabilize and the compressor cycle on and off.
     

see this steps and think with clearly and logically NOT feared. God bless you
Start with the compressor. Does it engage when you turn on the A/C?
If so, the compressor is working and the A/C system probably contains enough refrigerant to make cold air, so the problem is inside the HVAC unit. Replace the motor that controls the blend air door (this is a difficult job and best left to a professional since it involves tearing apart the HVAC unit -- about an 8 to 10 hour job!).
If the compressor does not engage when you turn on the A/C, see if it will run by jumping the compressor clutch wire directly to the battery (use a fused jumper wire). If the compressor works when you jump it, and the A/C blows cold air, the system contains refrigerant and the fault is likely a bad A/C compressor clutch relay or a bad clutch cycling switch or pressure switch.
If the compressor does not engage when you jump it, the problem is a bad compressor clutch.
If the clutch engages but the compressor does not turn (the belt will start to slip and squeal), the compressor is locked up and you need a new compressor.
If the compressor clutch engages and turns the compressor, but the A/C still does not blow cold air, the system is probably low on refrigerant and needs to be recharged.

Hello again. is your heater tap actually operating? its not stuck on hot is it? just check the tap actually moves when the hot cold selector is switched.

Air Conditioner blows warm air

1. Air conditioner system is discharged. Have the system evacuated, charged and leak tested by an MVAC certified technician, utilizing approved recovery/recycling equipment. Repair as necessary.
2. Air conditioner compressor clutch not engaging. Check compressor clutch wiring, electrical connections and compressor clutch, and repair or replace as necessary.

The smoke is probably coming from the Serpentine belt. Flip the belt and see if it is now starting to be SHINY. The belt is going faster than the Compressor has the ability to turn. More than likely, the Compressor is partially seized and needs to be replaced.

There are a few possibilities. Blown fuse to the compressor clutch, bad clutch, seized compressor, broken belt, low system pressure, or a rock through the coils in front of the radiator causing a leak. Take it to a reputable mechanic for repairs.

I would check the following possibilities:
1. Is compressor clutch working? - You need to do this when the ac is blowing hot air only - locate compressor drive pulley on engine - rubber belt wraps around it. Start engine and set to max ac. When the ac is blowing hot air, look at the center of the compressor drive pulley using a good flash light - watch it for a while, it should be spinning with the pulley - this means the compressor is engaged. If not, the compressor is not engaged. If your ac is blowing hot air, then the compressor should be engaged and running (trying to cool). If it is not engaged, then your compressor clutch is probably going out. Could be low voltage to clutch, but more likely the clutch is worn out and only working some of the time. Note: if working normally, the compressor clutch will engage and disengage in cycles- but the air should always be cold. If clutch is bad, compressor would need to be replaced (sold as one unit). This is tricky to diagnose and could take some time - you need to do it when ac is blowing hot air but set to max cooling.

2. Low on refrigerant or refrigerant has moisture in it? If your ac blows cold initially after being off for a while, then heats up, and continues to regularly cycle back and forth between hot and cool air, then the system may be low on refrigerant or the refrigerant may have moisture in it that is freezing and restricting refrigerant flow. An a/c shop can check refrigerant level and even replace refrigerant if moisture is suspected.

Could be other issues, but I would start with these.

Good luck

clutch

Most likley needs to be recharged. Shouldnt be low, but if it has ever been in an accident it may have a leak or your mechanic stole the refridgerant when it was cold outside and you didnt notice untill you turned the ac on.

connect a amp meter in line to the compressor clutch cable, operate air con and check amps, should not above 12 amps .